Meet Our Team


Gebran S. (Gabe) Anton - Partner
I have been involved in commercial development for many years. In 1988, Anton, Zorn & Associates was formed. I also owned and operated "Anton's" menswear stores, a nine store chain, for more than thirty years. In addition, I am the former Chairman of the Board of the First National Bank in Macomb County and previously served on the Board of Directors of Community Central Bank. Also, I am the past Chairman of St. Joseph's Health Network Board and former President of the Macomb County Chamber of Commerce, as well as having served on numerous other charitable boards and civic committees.

2007 Arts Serve Michigan Civic Leader2007 Macomb Hall of Fame Honoree

Joseph (Joe) Sowerby - Partner
My background includes managing, developing and selling commercial and investment properties, apartments and businesses. I have been a licensed Realtor since 1981 and with Anton, Sowerby & Associates since 1990. In a single twelve-month period I personally closed over $100,000,000 in sales. Visit my web page at

Susan (Sue) Blanchard - Vice President
Being a part of the Anton, Sowerby & Associates team provides me with the information base and support that is required to help my clients achieve business success.  With over 37 years of banking experience, my primary focus has been on servicing and meeting business owners' needs.  Key to my success has been the long-term relationships that I have established with my customer base.  Another important role that I’ve held is that of volunteer.  I am a 14 year member of the Clinton Valley Kiwanis and an ongoing volunteer for the Salvation Army.  As an alumni member of Leadership Macomb, I have also participated in several local volunteer projects.  I place high importance on donating my time and energy to helping others within our community.  I look forward to using my company’s outstanding platform to provide exceptional servicing to my current and future clients. 

Deborah (Debbie) Boone
Debbie Boone’s extensive food and beverage background makes her an Anton, Sowerby & Associates’ expert in hospitality sales and leases. Her experience in owning and operating various bars and restaurants also establishes her strength in all aspects of business, from sales and marketing to profit and loss to customer service. Her passion for working with the public has developed strong skills in exceeding her clients’  expectations. Licensed since 2009, Debbie has specialized in representing owners and landlords in the sales and leasing of retail/commercial and office properties, primarily in Macomb County. Hundreds of new businesses have opened, expanded or relocated, because of Debbie’s professional negotiating skills and personal touch.

Robert (Bob) Horvath
A seasoned professional sales executive with over 20 years in real estate. Experience includes sales and leasing of office, commercial, vacant land and business properties. Held executive sales, marketing and financial management positions with national consumer goods firm. Has a Masters in Business Administration from the University of Detroit, a Bachelor of Science and Business Management from Wayne State University and a Graduate Realtor Institution designation.

James (Jim) Ketchum
Jim began his real estate career in 1977 purchasing and rehabilitating properties.  Being responsible for acquisition and sales, Jim has a great knowledge of real estate values in the market.  While acquiring over 150 properties in two decades Jim sold his inventory and in 2005 entered into property management and commercial brokerage.  Jim understands the needs of buyers and tenants and relies on his experience negotiating deals in this stabilizing market.

Thomas (Tom) Sullivan
My experience is on both sides of the negotiating table helping tenants, landlords and owner/users with land, build-to-suit and existing facility transactions since 1984. Through past positions with two Fortune 500 companies, I have extensive experience in market research, new product development and in acquisitions. As such, I appreciate and understand business operations and corporate structure.  I am a past director of the Detroit Area Commercial Board of Realtors. I earned a B.S. in Mechanical Engineering from Purdue University and a M.B.A. from Ohio State University.   I especially enjoy searching, screening and negotaiting for  Buyers/Tenants.

Gilbert (Gil) Zook

The early years of my 50 year real estate career were spent as a commercial mortgage lending officer. As a state certified/designated appraiser, I specialized in valuing commercial, industrial, office and developmental properties primarily in Macomb County for banks, credit unions, municipalities, insurance companies, attorneys, circuit/federal courts plus numerous businesses and individuals. I look forward to using the wealth of information I’ve accumulated and professional relationships I’ve established in serving my client’s needs as I enter into the commercial real estate market as part of the sales team at Anton, Sowerby & Associates.